Electrical connectors with integral fault detection are provided. The connectors are adapted to be coupled to AC multi-phase electrical cables, and can include a plurality of phase contacts, a detector, and an indicator. The phase contacts include a first phase contact, a second phase contact, and a third phase contact to receive a first phase, a second phase, and a third phase, respectively, of the electrical cable. The detector is configured to monitor a first temperature associated with the first phase contact, a second temperature associated with the second phase contact, and a third temperature associated with the third phase contact to detect a temperature fault at any of the contacts. The indicator is operatively coupled to the detector and is configured to indicate presence of the temperature fault.